Registration Dossier
Registration Dossier
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EC number: 415-070-1 | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Remarks:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 225 °C
- Conclusions:
- The test substance decomposes before melting at temperature above 225 °C.
- Executive summary:
In order to evaluate the melting point of the substance, a test was performed according to the method A.1 of EEC-Directive 92/69 EEC. The Differential Scanning Calorimetry method was used for the analysis. Above about 225°C (498 K) the test substance was not stable in an air atmosphere; it reacts or decomposes. Melting point of the test substance was not observed.
Reference
Before the experiment it was observed that the mass of the sample slowly increased. Possibly this was caused by absorption of water from the air. Between the start of the experiment and about 110°C (383 K) a small endothermic effect was observed; this effect could be caused by evaporation of the absorbed water. An exothermic effect was observed above about 225 °C (498 K). This indicates that the test substance is not stable above this temperature; it reacts or decomposes. During the experiment the sample lost 1.20 mg (13%) of its mass and its visual appearance was not changed.
Description of key information
Decomposition above 225 °C, before melting
Key value for chemical safety assessment
Additional information
In order to evaluate the melting point of the substance, a test was performed according to the method A.1 of EEC-Directive 92/69 EEC. The Differential Scanning Calorimetry method was used for the analysis. Above about 225°C (498 K) the test substance was not stable in an air atmosphere; it reacts or decomposes.
Melting point of the test substance was not observed.
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